Bosch Rexroth | 4WEH10E4X6EG24N9ETSK4B10
4WEH10E4X/6EG24N9ETSK4/B10
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The 4WEH10E4X/6EG24N9ETSK4/B10 directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow in automation circuits and allows electronic actuation for machine functions. This model is a 4-way valve with size NG10, matching the ISO 4401-05-05-0-05 porting pattern for manifold mounting. Spool symbol E establishes a specific flow path arrangement. The integrated 6E high-power pilot control valve shifts the main spool using internal pilot oil supplied and returned through ET channels, eliminating external lines. A 24 V DC supply energizes the solenoids, and the K4 connector in accordance with DIN EN 175301-803 provides the electrical interface. Switching time can be tuned with the S supply-side adjustment feature to match system response requirements. A concealed manual override identified as N9 permits emergency actuation while protecting against accidental use.
The valve withstands 280 bar on the working ports, providing compatibility with high-pressure circuits that power cylinders and motors. The pilot stage accepts 250 bar and can return internally at up to 210 bar, so all pilot lines can be contained within the manifold. Reliable switching commences once pilot pressure rises above 12 bar, preventing partial spool travel. Oil cleanliness must reach class 20/18/15 under ISO 4406 to avoid silting and to preserve the precision edges of the spool. A 1.0 mm throttle insert labeled B10 moderates pilot flow, damping pressure peaks and reducing noise. Together, these parameters define the operating envelope, balance speed with stability, and secure long service life in hydraulic automation tasks that demand repeatable directional control.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Electrical Connection
K4 (DIN EN 175301-803)
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Return Pressure (y Internal, Dc)
210 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure (3-pos, Spring)
12 bar
Pilot Control Valve
6E (High-Power)
Pilot Oil Supply/return
ET (Internal/Internal)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG10
Spool Symbol
E
Supply Voltage
24 V DC (G24)
Switching Time Adjustment
S (Supply Control)
Throttle Insert
1.0 mm (B10)
Way Type
4-Way
1620 Old Apex Road
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